Most people are familiar with a few of the more common prefixes used before many units to denote a fraction or a multiple of the unit - kilograms, megabytes, centimetres etc.. As well as these there a number of less well known ones, going right up to yotta and right down to yocto.

A while ago I wrote a post on SI Prefixes in Python to list all the prefixes along with their corresponding powers and multipliers. When I started writing an equivalent in JavaScript I soon hit a brick wall when I realised that JavaScript's Number type couldn't provide the precision needed.

Searching around for a solution to the problem I discovered the excellent math.js library which, amongst many other things, provides us with a BigNumber type and I thoroughly recommend reading the documentation here. This post covers my simple little JavaScript project to list the numeric SI prefixes.

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